Error detection using mode information of macroblocks for video transmission

• 作 者: 方勇 吴成柯 朱红
• 机 构: National Key Laboratory on ISN, Xidian University, Xi'an 710071,National Key Laboratory on ISN, Xidi
• 出 处: Chinese Optics Letters
• 发表日期: 2005年10期
• 关键词: correctly frames reconstructed encoder packet noisy absolute smoothness Containe

A new method for error detection using mode information of macroblocks (MBs) is proposed. For decodableinter MBs, inter residues are calculated by adding up absolute values of received residual pixels and intracomplexities are estimated by that of motion compensated reference blocks. If inter residues are larger thanintra complexities by a predefined quantity, MBs are considered to be erroneous. For decodable intra MBs,the connective smoothness of the current MB with correctly decoded neighboring MBs is tested to finderroneous MBs. Combined with error concealment, the new method improves the quality of reconstructedimages by about 0.5—1 dB in peak signal-noise ratio (PSNR).

A new method for error detection using mode information of macroblocks (MBs) is proposed. For decodableinter MBs, inter residues are calculated by adding up absolute values ​​of received residual pixels and intracomplexities are estimated by that of motion compensated reference blocks. If inter residues are For decodable intra-MBs, the connective smoothness of the current MB with the correctly-decoded neighboring MBs is tested to finderroneous MBs. Combined with error concealment, the new method improves the quality of reconstructedimages by about 0.5-1 dB in peak signal-noise ratio (PSNR).